I got them for a gift, so I can't tell how they will feel on the bed. I opened the package and rubbed the fabric a bit and they seem to pill a little. I'm thinking it's possible with washing and use, it could be a concern. I have heavy weight flannel sheets on my bed, and the snow flake sheets seem quite a bit thinner. Another thing is, they don't feel very soft. I'd have to put these in a class with "fair" sheets not "quality".